PSYC 4030 Study Guide - Edge Detection, Retina, Saccade
Document Summary
Specialized visual detectors- frog: edge detectors: respond to border between light and dark, moving contrast detectors: respond to moving edges, dimming detectors: respond to changes in overall illumination, convex edge detectors: respond to small, dark, moving objects. We also have feature detectors and specialized areas in the human brain: motion, edge, bar detectors in visual cortex, other parts of the brain appear specialized for, human faces, scenes, speech. In addition, we can perceive stimuli in a wide variety of orientations and contexts: object recognition is fast and very flexible. Steven"s power law: what it means, sensory or subjective magnitude grows in proportion to the physical intensity, but. Not the same for each type of stimulus: examples: Turned to change: habituation- repeated stimulus tuned out (ex: ac noise, ganzfield illusion- looking into a blank field, experience hallucinations, feeling of not seeing, sensory deprivation experiments- flotation tanks, experience hallucinations, long duration unpleasant.
